Product Description
The SP House Service Cutouts are designed for 60/80/100A rating complying with BS 7657:1993 and ESI 12-10. They ensure accuracy in the various parts for interchangeability.We provide brass inserts wherever required for fixing one part to another. The Terminal Blocks are of Brass duly Tin plated, fitted with two large pinching screws per conductor. Further, these SP House Service Cutouts are designed for standard BS 88 / BS 1361 fuse links and standard copper contacts having uniform pressure to ensure effective contact with long service life.
Following dimensions are standard:
- Upto 60/80A 22.23 mm dia.-57 mm long II a 80/100A 30.16 mm dia.-57 mm long II b Fuse Carriers.
- Fuse link can be withdrawn from the open end of the carrier half. Carrier housing is common for both 60A & 100A fuse links.
- Upgrading of cutout can be done simply by replacing with larger fuse clips.
Sealing:
- The fuse carrier and fuse base unit have provision for wire sealing. An additional wire sealing arrangement is provided for the neutral.
Phase Protection:
- A hinge type nylon shroud covers the incoming phase terminals thus reducing the possibility of accidental contact with live parts when wiring the outgoing terminal.
Interlocking:
- Prior to removal of any component, the fuse carrier has to be withdrawn. This enables clear access to the neutral block and/or cable trough. This is an inbuilt safety feature.
Terminals:
- The design and construction of the cutouts ensures terminals to be retained without the use of any fixing screws.
- Adequate size serrated bores and pinching screws are provided for standard Copper or Aluminum and solid conductors of upto 35 sq. mm.. The neutral/earth block of the cutout also has bores for two earth conductors and connection for a time switch wire.
Cabling:
- The cable trough is designed for termination, suitable for PVC cables. In addition a small knockout is provided for an externally connected earth wire when using a PILCA cable.
Type Tests:
- The cutout has been tested for the following Type Tests as per BS 7657:
- Test for temperature rise at rated current. Mechanical endurance (including repeat of test for temperature rise at rated current).
- Overload test (including repeat of test for temperature rise at rated current, lightning impulse withstand voltage dry tests and power frequency withstand voltage dry tests).
- Performance under short-circuit conditions, Flammability test, Impact test, Strength of sealing lugs.
- Degree of protection test (Ip4x) and Terminal torque test.
Routine Test:
- H.V. Test at 3.75 kV (rams) for one minute.
- Insulation resistance test.
- Mechanical insertion & withdrawal test.
Technical specifications
| Type/Data | 60/80A SP | 100A SP | 60/80A SPN | 100A SPN | 100A TPN |
| Rated Operating Voltage Ue | 415V | 415V | 415V | 415V | 415V |
| Rated Operational Current in | 60/80A | 100A | 60/80A | 100A | 100A |
| Rated Insulation Voltage Ui | 660V | 660V | 660V | 660V | 660V |
| Rated Short Time Current Lcw | 12 kA Peak 0.02 Sec | 18 kA Peak 0.02 Sec | 12 kA Peak 0.02 Sec | 18 kA Peak 0.02 Sec | 18 kA Peak 0.02 Sec |
| Impulse Voltage U imp | 6 kV with 1.2/50µs waveform | 6 kV with 1.2/50µs waveform | 6 kV with 1.2/50µs waveform | 6 kV with 1.2/50µs waveform | 6 kV with 1.2/50µs 6 kV with 1.2/50µs waveform |
| Cable Size upto | 35 sq. mm | 35 sq. mm | 35 sq. mm | 35 sq. mm | 35 sq. mm |
| Fuse Link Cartridge | As Per BS 1361 Type II a | As Per BS 1361 Type II b | As Per BS 1361 Type II
| As Per BS 1361 Type II b | As Per BS 1361 Type II b |
| Sealing Arrangement Provided | Yes | Yes | Yes | Yes | Yes |
Reliable Electric Protection for Homes and BusinessesThe SP House Service Cutout provides essential fuse protection in electrical distribution and metering panels. Its high breaking capacity (16 kA) and superior porcelain insulation guard against overloads and short circuits, safeguarding your circuits and electrical devices. Supported by IS:2086 and IS:13703 certifications, users can trust its compliance and safety in every installation.
Engineered for Durability and SafetyConstructed with a porcelain body and heavy-duty brass connectors, this service cutout excels in resilience. Its smooth glazed finish and robust IP20 protection prevent dust and accidental contact. Flame resistance, shock resistance, UV protection, and overheating safeguards via the fuse link ensure stable operation in diverse Indian climates, including up to 95% RH humidity.
Effortless Installation and MaintenanceThe screw terminal connection and surface mount design facilitate quick and secure installation. As a rewirable (Kit Kat) fuse type, the product is designed for minimal maintenance, making future fuse replacements straightforward and cost-effective. The cutouts low-maintenance nature supports a hassle-free operation for extended periods.
FAQs of SP House Service Cutout:
Q: How do I install the SP House Service Cutout in a metering panel?
A: The SP House Service Cutout is designed for surface mounting. Attach the cutout to your metering panel board using appropriate screws. Connect incoming and outgoing wires to the heavy-duty brass terminals via screw connections, ensuring all electrical connections are tight and secure before powering on.
Q: What benefits does the rewirable Kit Kat fuse link provide?
A: The rewirable Kit Kat fuse allows you to replace only the fuse wire in case of overload or short circuits, making it a cost-efficient and straightforward option for ongoing protection. Its design reduces downtime and simplifies maintenance compared to sealed fuses.
Q: When should I consider replacing the fuse link?
A: Replace the fuse link immediately after it melts due to an overload or fault in the circuit. Always use the specified fuse wire rating to maintain safety and compliance with IS:2086 / IS:13703 standards.
Q: Where can this service cutout be used?
A: This SP House Service Cutout is ideal for residential, commercial, and light industrial applications. It is mainly used in electrical distribution panels or metering board systems to provide reliable fuse protection for single-phase circuits.
Q: What makes the cutout weather and heat resistant?
A: The service cutout features a porcelain body and brass terminals, offering both UV and flame resistance. Its insulation ensures efficient protection in high temperatures (up to 55C) and high humidity (up to 95% RH), making it suitable for Indian environmental conditions.
Q: How does the cutout enhance operational safety?
A: It provides protection from electrical shocks, overheating (through the fuse link), and accidental contact (IP20 rating). The use of high-quality porcelain insulation and brass terminals ensures minimal risk of electric faults and heat build-up, contributing to a safer operation overall.